TH34413A - Moisture-cured elastomer and heat cured of polyurethane. And polyurethane / urea Where physical properties were improved - Google Patents

Abstract

DC60 (10/02/42) Elastomer whose physical properties were improved, in particular strength, flexibility, tensile strength. And the compression set, may be prepared by chain expansion or moisture curing of isocyanate thermoplastic pre-polymers prepared from high molecular weight polyol compositions. Polyoxypropylene Low unsaturated diols and low molecular weight diols elastomers are useful for applications such as rollers and other applications. In which physical properties are important, elastomers whose physical properties are improved, especially strength, flexibility, tensile strength. And the compression set, may be prepared by chain expansion or moisture curing of the isocyanate thermoplastic pre-polymer. It is prepared from high molecular weight polyol composition. Polyoxypropylene Low unsaturated diol And low molecular weight diols, elastomers are useful for applications such as rollers and other applications where physical properties are important.

Claims (1)

1. Isocyanate, Terminate, Pre-polymer or Quasi-pre-polymer Which contains a lot of reaction products More than enough, Dai-shiometric model or Polyisocyanate is greater than toluene diivocyanate in which the polyol composition contains: ai) 1 or more high molecular weight polyoxypropyl diol containing The unsaturation of less than 0.02 meq / g and a molecular weight of more than 2000 Dalton; And aii) 1 or more low molecular weight diol with weight Molecules of less than 400 Dalton at the hydroxyl number of elements Assembled polyols as tagged: